Surface pattern for substrate

ABSTRACT

D 6603-606

FIG. 1 is a view of a surface pattern for a substrate showing my new design; and,

FIG. 2 is a sectional view of the surface pattern for a substrate taken along line 2—2 in FIG. 1.

The broken lines indicate the boundaries of the claimed design, and form no part of the claimed design. 

The ornamental design for a surface pattern for substrate, as shown and described. 